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nixos skillA

Name: nixos
Author: iuliandita

nixos is agent-read markdown (skill) from iuliandita/skills: Administer NixOS and Nix: flakes, Home Manager, nix-darwin, generations, overlays, and declarative configuration..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

What the file says

# NixOS, Nix, and Flakes Administration

Administer NixOS without falling back into imperative distro muscle memory. NixOS is
declarative, functional, and atomic: the system is a value computed from a configuration,
every change becomes a new immutable generation in `/nix/store`, and rollbacks are a
bootloader entry away.

This skill keeps that model intact, then layers in the practical stack: channels vs
flakes, `nixos-rebuild` vs `nix` CLI, home-manager, nix-darwin, store hygiene, overlays,
module writing, secrets, and the Determinate Nix and Lix lanes.

The places NixOS breaks are NixOS-shaped: channel drift, flake input staleness, garbage
collection that nukes a needed derivation, overlays fighting, `nix-env -i` poisoning the
user profile, hardware modules missing, or people treating `/etc/nixos/configuration.nix`
like a normal Linux config file.

**Why people run it.** Atomic upgrades and rollbacks, bit-for-bit reproducible systems,
disposable dev shells, fleet-wide configuration without a separate config-management tool,
and a single language for a workstation, a server, a container image, a NixOS VM, and a
macOS laptop via nix-darwin.
…

Read the whole file at its exact version.

How to install

Latest version

mdr add iuliandita/skills/nixos@git:20260920.ac01853

Exact content

mdr add iuliandita/skills/nixos@sha256:02a55a4ba53ec624

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

[![mdr](https://markdownregistry.com/badge/art_dvpacohv3rscchk5.svg)](https://markdownregistry.com/a/art_dvpacohv3rscchk5)

1 badge views in 30 days

Versions

version	committed	commit	size	audit
git:20260920.ac01853 latest	2026-09-20	ac01853	27,992 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Deterministic, no model, same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (27992 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

iuliandita/skills · 7 stars · license MIT · pushed 2026-09-24 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_dvpacohv3rscchk5
GET https://markdownregistry.com/api/v1/resolve?ref=iuliandita/skills/nixos
GET https://markdownregistry.com/api/v1/blob/02a55a4ba53ec6246fa3c6ed06c555f4fef29fafd97954ddc41b7d336a5ca314

Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

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